US Patent 10328295 Cellular phone casing

A cellular phone case in combination with a flexible packet holding an admixture of water and super absorbent material to provide heat dissipation, heat indication, and fire extinguishment properties. The cellular phone case has a translucent rear surface and the packet fits inside the case between the bottom surface of the case and the underside of a cellular phone. The packet dissipates heat during a recharging condition, and provides a fire retardant agent to arrest a lithium battery meltdown.